STATEMENT OF CONSOLIDATED CHANGES IN EQUITY AND NONCONTROLLING INTEREST (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Paid-In Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	APACHE SHAREHOLDERS’ EQUITY (DEFICIT)	Noncontrolling Interests	Noncontrolling interests, Egypt	Noncontrolling interests, Altus	Altus Preferred Unit limited partners
Beginning balance at Dec. 31, 2018											$ 0
Increase (Decrease) In Redeemable Noncontrolling Interest [Roll Forward]
Issuance of Altus Preferred Units											517
Net income attributable to Altus Preferred Unit limited partners											4
Ending balance at Jun. 30, 2019											521
Beginning balance at Dec. 31, 2018	$ 8,812	$ 260	$ 12,106	$ (2,048)	$ (3,192)	$ 4	$ 7,130	$ 1,682
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to common stock	(407)			(407)			(407)
Net income (loss) attributable to noncontrolling interest									$ 87	$ (2)	4
Distributions to noncontrolling interest - Egypt	(164)							(164)
Common dividends	(188)		(188)				(188)
Other	16	1	13		2		16
Ending balance at Jun. 30, 2019	8,154	261	11,931	(2,455)	(3,190)	4	6,551	1,603
Beginning balance at Mar. 31, 2019											0
Increase (Decrease) In Redeemable Noncontrolling Interest [Roll Forward]
Issuance of Altus Preferred Units											517
Net income attributable to Altus Preferred Unit limited partners											4
Ending balance at Jun. 30, 2019											521
Beginning balance at Mar. 31, 2019	8,609	261	12,009	(2,095)	(3,190)	4	6,989	1,620
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to common stock	(360)			(360)			(360)
Net income (loss) attributable to noncontrolling interest									43	(3)	4
Distributions to noncontrolling interest - Egypt	(57)							(57)
Common dividends	(94)		(94)				(94)
Other	16		16				16
Ending balance at Jun. 30, 2019	8,154	261	11,931	(2,455)	(3,190)	4	6,551	1,603
Beginning balance at Dec. 31, 2019	555										555
Increase (Decrease) In Redeemable Noncontrolling Interest [Roll Forward]
Net income attributable to Altus Preferred Unit limited partners											37
Ending balance at Jun. 30, 2020	592										592
Beginning balance at Dec. 31, 2019	4,465	261	11,769	(5,601)	(3,190)	16	3,255	1,210
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to common stock	(4,866)			(4,866)			(4,866)
Net income (loss) attributable to noncontrolling interest									(162)	(9)	37
Distributions to noncontrolling interest - Egypt	(40)							(40)
Common dividends	(19)		(19)				(19)
Other	(5)	1	(6)		1	(1)	(5)
Ending balance at Jun. 30, 2020	(636)	262	11,744	(10,467)	(3,189)	15	(1,635)	999
Beginning balance at Mar. 31, 2020											573
Increase (Decrease) In Redeemable Noncontrolling Interest [Roll Forward]
Net income attributable to Altus Preferred Unit limited partners											19
Ending balance at Jun. 30, 2020	592										592
Beginning balance at Mar. 31, 2020	(228)	262	11,747	(10,081)	(3,189)	15	(1,246)	1,018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to common stock	(386)			(386)			(386)
Net income (loss) attributable to noncontrolling interest									$ (11)	$ 0	$ 19
Distributions to noncontrolling interest - Egypt	(8)							(8)
Common dividends	(9)		(9)				(9)
Other	6		6				6
Ending balance at Jun. 30, 2020	$ (636)	$ 262	$ 11,744	$ (10,467)	$ (3,189)	$ 15	$ (1,635)	$ 999